Year Persons 2005-01-01 16016759.25 2006-01-01 16792280.50 2007-01-01 17294287.00 2008-01-01 17515439.75 2009-01-01 18081032.50 2010-01-01 18265842.25 2011-01-01 18718240.50 2012-01-01 19544927.25 2013-01-01 19817758.00 2014-01-01 19635911.00 2015-01-01 20128209.25 2016-01-01 20504041.00 2017-01-01 20661239.00